.toastui-editor-contents,
.ProseMirror {
  font-size: 16px;
  font-family: 'Helvetica', 'Arial', 'Lucida Family', 'Verdana', 'Franklin Gothic Medium',
    'Arial Narrow', Arial, sans-serif;
}

.toastui-editor-contents pre {
  background: #272822;
  border-radius: 0.3em;
  color: #f8f8f2;
  font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace;
}

.toastui-editor-contents pre code{
  white-space: pre;
}